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Issue 280 << Issue 279 | Issue 281 >>
Publisher's Letter

1 Jan, 2012

Australia’s energy needs are in the hands of the clowns

Arduino: What's All The Fuss About

3 Jan, 2012

The low-cost, open-source Arduino microcontroller development board has taken the hobby-electronics world by storm and is now gaining popularity with experienced engineers as well. So what?s all the fuss really about? And anyhow, what's with the name "Arduino" and where did it come from? Read on!

A Stereo Audio Compressor

5 Jan, 2012

Do you hate the way the sound level on your TV suddenly jumps during the advert breaks? Or do you find that the sound levels vary widely when switching between digital TV stations? Or maybe you have problems listening to CDs or MP3s in your car or against the background din during a party? Are the soft parts too soft and the loud parts too loud? This Stereo Compressor will solve that problem. It reduces the dynamic range of the signal while still maintaining clean sound. The unit is also ideal for use with PA systems.

Serviceman's Log

7 Jan, 2012

What do you make of a situation where several PCs in an office simultaneously fail for no apparent reason and then replacement machines also fail, along with other gear? It's just got to be a power supply problem but you?ll never guess what caused it.

Playing USB-Stick & SD/MMC Card Music Without A PC

9 Jan, 2012

Do you ever wish you could simply play music tracks that you've saved on a USB stick or memory card? We had a particular reason for developing this project but it could easily be incorporated into your home hifi system for real convenience!

Build A Simple AM Radio

11 Jan, 2012

This simple AM radio can built in two forms. One is shirt pocket size, not much larger than an Android phone, which drives headphones or ear-buds. The other is a retro-style mantel radio with a hand-span dial and a 100mm (4-inch) loudspeaker in a basic timber cabinet.

Dorji 433MHz Wireless Data Modules

15 Jan, 2012

Chinese 434MHz ISM data modules just keep getting better and better!

Vintage Radio

17 Jan, 2012

Boasting a power output of 50W RMS, the AWA PA1002 is a typical valve PA amplifier from the mid-1960s. It's a rugged, well-made unit with many useful features and is easy to troubleshoot and restore.

Ask Silicon Chip

21 Jan, 2012

Got a technical problem? Can't understand a piece of jargon or some technical principle? Drop us a line and we?ll answer your question. Write to: Ask Silicon Chip, PO Box 139, Collaroy Beach, NSW 2097 or send an email to


23 Jan, 2012

Letters and emails should contain complete name, address and daytime phone number. Letters to the Editor are submitted on the condition that Silicon Chip Publications Pty Ltd may edit and has the right to reproduce in electronic form and communicate these letters. This also applies to submissions to "Ask SILICON CHIP" and "Circuit Notebook".

3-Input Stereo Audio Switcher

31 Jan, 2012

Need more analog audio inputs for your stereo amplifier or home-theatre set-up? This 3-Input Stereo Audio Switcher will do the job. It works with an infrared remote control or you can just press one of the front-panel buttons to select a program source.

Circuit Notebook  - 13 Jan, 2012

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